In the equation 3x+5=15.5, choose the answer for x.
                            
            
                        
                    Topic: Basic Math
                                    What is √9?
                            
            
                        
                    
                                    What is the ∑ of 5, 6, 2, 12, and 8?
                            
            
                        
                    
                                    [(1+2)*(1+5)] = ?
                            
            
                        
                    
                                    2 × (3+5) = ?
                            
            
                        
                    
                                    5 < 3 = true/false?
                            
            
                        
                    